Data Communications And Networking. 
By Ashok Gahlot. 
 - 1st. 
 - New Delhi.:  Cyber Tech.,  2009. 
 - 234 p.:  ill.;  25 cm. 
<br/><br/><label>ISBN: </label>978-81-7884-409-1 
<br/><br/><label>Subjects--Index Terms: </label>Computer Science. Data Communications And Networking. 
<br/><br/><label>Dewey Class. No.: </label>004.6